[Phpwiki-talk] install help

[tom z. <to...@pl...>]

hey all,

i'm trying to get phpwiki up and running using a postgres DB and keep 
getting the following error:

Fatal PhpWiki Error

lib/WikiDB/backend/PearDB.php:31: Fatal[256]: Can't connect to database: 
wikidb_backend_pgsql: fatal database error

     * DB Error: extension not found
     * (pgsql://apache@localhost/wiki)


i am new to phpwiki and was wondering if anyone out there had any ideas 
as to what is going on.
i can connect to the DB from the command line no-problem.

thanks

tom